[postgis-devel] filter by m-value and effective area

[Paul Ramsey]

I think a more general M-filter is appropriate. There may be other ways of
usefully populating an M for filtering than just VW.
P.

On Sat, Sep 23, 2017 at 4:05 AM, Sandro Santilli <strk at kbt.io> wrote:

> On Sat, Sep 23, 2017 at 12:39:16AM +0200, Nicklas Avén wrote:
>
> > Today we have no function doing this "removing of vertecies". But it
> > would be quite simple to write a function that just filters by the m-
> > value, and the simplification will be very fast.
> >
> > It will be a 2.5 function, but what do you think?
> >
> > Is this worth another function in the crowd?
>
> Of course !
> Actually, I thought you already added that function
> as part of the Visvalingam-Whyatt algorithm work.
> Should it be a ST_SimplifyVWPrepared() or are you
> thinking of a more general "filter by M" one ?
>
> --strk;
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